Wear-resistant prefabricated parts, drop walls, and drop wall repair construction methods

Abstract

The present application provides a wear-resistant prefabricated part, a drop wall, and a drop wall repair construction method, wherein the wear-resistant prefabricated part includes: a prefabricated part body, the prefabricated part body is cast from a refractory castable, the prefabricated part body has a protrusion and a recess, the protrusion is used to cooperate with the recess of another wear-resistant prefabricated part, so that at least two wear-resistant prefabricated parts form an integral structure. The wear-resistant prefabricated part, drop wall, and drop wall repair construction method provided by the present application improve the integrity and wear resistance of the incinerator drop wall, can effectively extend the service life of the drop wall, and ensure the stability of the incinerator operation.

Description

Technical Field

[0001] The present application relates to the technical field of drop wall repair, and in particular to a wear-resistant prefabricated part, a drop wall, and a drop wall repair construction method. Background Art

[0002] Domestic waste usually contains various corrosive substances such as acids and alkalis, as well as a large amount of water. The waste falls and tumbles through the drop wall under the push of the pushing device. The corrosive substances and the waste produce drastic temperature changes at the drop wall before and after falling, which will cause great erosion on the refractory materials of the drop wall. The wear and temperature changes caused by the falling waste will cause the refractory materials to peel off, resulting in frequent production stoppages and affecting normal production.

[0003] In the related art, refractory bricks are usually used to repair drop walls. The refractory bricks are connected to the furnace wall through hooks and fixed. Refractory bricks have good wear resistance and can improve the wear resistance of the drop wall to a certain extent.

[0004] However, in actual use, the drop wall built with refractory bricks has poor integrity and is prone to peeling or even collapse, which seriously restricts the stability of the incinerator operation. Summary of the Invention

[0005] The present application provides a wear-resistant prefabricated part, a drop wall and a drop wall repair construction method, which is used to solve the defects of poor integrity and easy peeling of the drop wall built with refractory bricks in the existing technology, improves the integrity and wear resistance of the incinerator drop wall, can effectively extend the service life of the drop wall, and ensure the stability of the incinerator operation.

[0006] The present application provides a wear-resistant prefabricated part, comprising: a prefabricated part body, wherein the prefabricated part body is formed by casting a refractory castable material, and the prefabricated part body has a protrusion and a recessed part, wherein the protrusion is used to cooperate with the recessed part of another wear-resistant prefabricated part to form an integral structure of at least two wear-resistant prefabricated parts.

[0007] According to a wear-resistant preform provided in the present application, the protrusion protrudes from the first side wall of the preform body, the recessed portion is recessed into the second side wall of the preform body, and the first side wall and the second side wall are two walls opposite to each other of the preform body.

[0008] According to a wear-resistant preform provided by the present application, the third side wall of the preform body is an inclined wall, which is inclined relative to the vertical wall, and the third side wall is located between the first side wall and the second side wall.

[0009] According to a wear-resistant preform provided in the present application, anchoring grooves are provided on the fourth side wall and the fifth side wall of the preform body, the fourth side wall and the fifth side wall are located between the first side wall and the second side wall, the anchoring grooves are located at one end of the fourth side wall and the fifth side wall facing away from the third side wall, and the anchoring grooves are used to install tensioning pieces.

[0010] According to a wear-resistant preform provided in the present application, an avoidance groove is further provided on the fourth side wall and the fifth side wall, the avoidance groove is connected with the anchoring groove, and the end of the avoidance groove facing away from the third side wall passes through the sixth side wall of the preform body, and the sixth side wall is arranged opposite to the third side wall; the depth of the avoidance groove is less than the depth of the anchoring groove; the avoidance groove is used to accommodate the pulling fixture.

[0011] According to a wear-resistant preform provided by the present application, the side of the avoidance groove facing the first side wall passes through the first side wall.

[0012] According to the wear-resistant preform provided by the present application, the protrusion extends along the length direction of the preform body.

[0013] According to a wear-resistant preform provided by the present application, there are a plurality of protrusions, and the plurality of protrusions are arranged at intervals along the length direction of the preform body.

[0014] According to the wear-resistant preform provided by the present application, the plurality of protrusions are arranged at intervals along the thickness direction of the preform body.

[0015] According to a wear-resistant prefabricated part provided by the present application, the refractory castable includes: 0-80% corundum, 0-10% corundum powder, 0-80% silicon carbide, 0-10% silicon carbide, 0-10% chrome green, 0-6% alumina powder, 0-8% coke stone powder, 0-6% silica fume, 0-5% high alumina cement, 0-0.5% polycarboxylate water reducer, 0-0.5% sodium tripolyphosphate, 0-0.5% sodium hexametaphosphate, and 6-15% silica sol; wherein the proportion of each component is proportioned according to mass percentage.

[0016] The present application also provides a drop wall comprising a leveling layer and a plurality of wear-resistant prefabricated parts as described in any one of the aforementioned embodiments of the present application, wherein the plurality of wear-resistant prefabricated parts are arranged along the length direction and height direction of the leveling layer.

[0017] According to a drop wall provided by the present application, the plurality of wear-resistant prefabricated parts arranged along the height direction of the leveling layer are staggered.

[0018] According to a drop wall provided in the present application, a plurality of expansion gaps are provided along the length direction of the leveling layer; one expansion gap is provided for every preset number of wear-resistant prefabricated parts; and the expansion gap is provided between the wear-resistant prefabricated parts and the incinerator.

[0019] According to a drop wall provided in the present application, the width of the expansion gap is 5 mm to 30 mm.

[0020] According to a drop wall provided by the present application, the expansion gap is filled with soft buffer material.

[0021] According to a drop wall provided in the present application, the drop wall further includes a mold shell, and the mold shell is provided on a wear-resistant preformed part located at the top among the multiple wear-resistant preformed parts arranged along the height direction.

[0022] According to a drop wall provided in the present application, the mold shell covers the top wall and side walls of the wear-resistant prefabricated part.

[0023] According to a drop wall provided in the present application, the drop wall further includes a heat insulation layer, and the heat insulation layer is located on the outside of the wear-resistant prefabricated part.

[0024] According to a drop wall provided in the present application, the drop wall further includes a sealing layer, which is located on a side of the wear-resistant prefabricated component facing the thermal insulation layer, and the sealing layer is located on top of the thermal insulation layer.

[0025] According to a drop wall provided in the present application, the drop wall further includes an insulation board, and the insulation board is located on a side of the insulation layer facing away from the wear-resistant prefabricated component.

[0026] The present application also provides a method for repairing a drop wall, including:

[0027] Pour the leveling layer according to the damage form of the drop wall;

[0028] An insulation board is provided on the inner side of the incinerator shell;

[0029] Laying the wear-resistant prefabricated parts on the leveling layer, wherein the wear-resistant prefabricated parts are fixedly connected to the shell through a fastening piece;

[0030] pouring a heat-insulating layer between the wear-resistant prefabricated component and the heat-insulating board;

[0031] A sealing layer is poured on top of the insulation layer to form a repaired drop wall.

[0032] According to a drop wall repair construction method provided in this application, the step of pouring a leveling layer according to the damage form of the drop wall specifically includes:

[0033] According to the damage form of the drop wall, the anchors are welded, and the spacing between the anchors is 100mm-150mm;

[0034] Pouring a leveling layer, wherein the pouring thickness of the leveling layer is 0 mm to 150 mm;

[0035] Curing for a first preset time length to form the leveling layer.

[0036] According to a drop wall repair construction method provided in the present application, the step of laying the wear-resistant prefabricated member on the leveling layer and fixing the wear-resistant prefabricated member to the shell via a fastener specifically includes:

[0037] Laying down the footing layer wear-resistant prefabricated parts along the length direction of the leveling layer;

[0038] Building a connection layer wear-resistant prefabricated member on top of the footing layer wear-resistant prefabricated member, wherein the connection layer wear-resistant prefabricated member and the footing layer wear-resistant prefabricated member are staggered;

[0039] Laying the wear-resistant prefabricated parts of the starting layer above the wear-resistant prefabricated parts of the connecting layer, wherein the wear-resistant prefabricated parts of the starting layer and the wear-resistant prefabricated parts of the connecting layer are staggered;

[0040] Wherein, along the length direction of the leveling layer, expansion gaps are reserved at intervals of a preset number of the wear-resistant prefabricated parts, and the expansion gaps are provided between the wear-resistant prefabricated parts and the side walls of the incinerator.

[0041] According to a fall wall repair construction method provided by the present application, after the step of pouring a sealing layer on top of the thermal insulation layer, the method further includes:

[0042] a second preset maintenance time length;

[0043] Restoring equipment wear lining;

[0044] The temperature is increased according to a first preset temperature increase schedule to form a repaired drop wall.

[0045] The present application provides a wear-resistant prefabricated part, a drop wall and a drop wall repair construction method. The wear-resistant prefabricated part is formed by pouring refractory castables, and protrusions and recesses are formed on the wear-resistant prefabricated part body. When repairing the drop wall, the protrusion on one wear-resistant prefabricated part can be matched with the recess on another wear-resistant prefabricated part, thereby effectively improving the integrity and wear resistance of the drop wall after the wear-resistant prefabricated part is built, extending the service life of the drop wall, and ensuring the stability of the incinerator operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0047] Figure 1 This is a structural schematic diagram of a wear-resistant prefabricated part provided in an embodiment of the present application;

[0048] Figure 2 This is another structural schematic diagram of the wear-resistant prefabricated part provided in an embodiment of the present application;

[0049] Figure 3 This is another structural schematic diagram of the wear-resistant prefabricated part provided in an embodiment of the present application;

[0050] Figure 4 This is a schematic diagram of the overall structure of the wear-resistant prefabricated parts provided in the embodiment of the present application that cooperate with each other;

[0051] Figure 5 This is a schematic diagram of a heating system for low-temperature sintering of a wear-resistant prefabricated part provided in an embodiment of the present application;

[0052] Figure 6 This is a schematic structural diagram of a medium-sized shell of a wear-resistant prefabricated part provided in an embodiment of the present application;

[0053] Figure 7 Schematic diagram of the cross-sectional structure of the drop wall provided in an embodiment of the present application;

[0054] Figure 8 This is a front view of the drop wall provided in an embodiment of the present application;

[0055] Figure 9 This is a schematic diagram of the structure of the drop wall and the grate provided in the embodiment of the present application;

[0056] Figure 10 It is a flow chart for implementing the drop wall repair construction method provided in the embodiment of the present application.

[0057] Reference numerals:

[0058] 100: wear-resistant prefabricated parts; 200: leveling layer; 300: expansion gap; 400: shell; 500: insulation layer; 600: sealing layer; 700: insulation board; 800: fastener;

[0059] 110: preform body; 120: protrusion; 130: recess;

[0060] 111: first side wall; 112: second side wall; 113: third side wall; 114: fourth side wall; 115: anchoring groove; 116: avoidance groove; 117: sixth side wall; 201: second anchoring piece; 401: first anchoring piece. DETAILED DESCRIPTION

[0061] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0062] Figure 1 This is a structural diagram of a wear-resistant prefabricated part provided in an embodiment of the present application. Figure 2 This is another structural diagram of the wear-resistant prefabricated part provided in the embodiment of the present application. Figure 3 This is another structural schematic diagram of the wear-resistant prefabricated part provided in an embodiment of the present application.

[0063] Reference Figure 1-Figure 3 As shown, an embodiment of the present application provides a wear-resistant preform 100, including: a preform body 110, the preform body 110 is formed by casting a refractory castable, and the preform body 110 has a protrusion 120 and a recessed portion 130, and the protrusion 120 is used to cooperate with the recessed portion 130 of another wear-resistant preform 100, so that at least two wear-resistant preforms 100 form an integral structure.

[0064] Specifically, in the embodiment of the present application, the refractory castable can be an amorphous castable. During the specific pouring, the amorphous castable can be added to the mold and vibrated for 20-40 seconds. The wear-resistant preform 100 after vibration forming can be wet-cured for 48 hours, and then demolded and placed in a firing kiln for low-temperature firing.

[0065] For example, in some examples, the temperature can be increased at a heating rate of 20°C / h for 6 hours to 150°C, then maintained at 150°C for 16 hours; the temperature can be further increased at a heating rate of 20°C / h for 5 hours to 250°C; maintained at 250°C for 20 hours; the temperature can be further increased at a heating rate of 20°C / h for 5 hours to 350°C; maintained at 350°C for 20 hours; the temperature can then be increased at a heating rate of 25°C / h for 8 hours to 550°C; maintained at 550°C for 20 hours; and then cooled down to room temperature along with the furnace temperature to obtain the wear-resistant preform 100. It can be understood that in the embodiment of the present application, the heating conditions for low-temperature sintering of the wear-resistant preform 100 are shown only as a specific example.

[0066] In an optional example of the embodiment of the present application, the amorphous castable may specifically include:

[0067] 0-80% of corundum, 0-10% of corundum powder, 0-80% of silicon carbide, 0-10% of silicon carbide, 0-10% of chrome green, 0-6% of alumina powder, 0-8% of coke stone powder, 0-6% of silica fume, 0-5% of high alumina cement, 0-0.5% of polycarboxylate water reducer, 0-0.5% of sodium tripolyphosphate, 0-0.5% of sodium hexametaphosphate, and 6-15% of silica sol; wherein, the proportion of each component is based on mass percentage.

[0068] The present application provides a wear-resistant prefabricated part 100, which is formed by casting refractory castables, and a protrusion 120 and a recessed part 130 are formed on the body of the wear-resistant prefabricated part 100. When repairing a drop wall, the protrusion 120 on one wear-resistant prefabricated part 100 can be matched with the recessed part 130 on another wear-resistant prefabricated part 100, thereby effectively improving the integrity and wear resistance of the drop wall after the wear-resistant prefabricated part 100 is built, extending the service life of the drop wall, and ensuring the stability of the incinerator operation.

[0069] It can be understood that in the embodiment of the present application, the protrusion 120 protrudes from the first side wall 111 of the preform body 110, and the recessed portion 130 is recessed in the second side wall 112 of the preform body 110, and the first side wall 111 and the second side wall 112 are two walls opposite to each other of the preform body 110.

[0070] For example, refer to Figure 1-Figure 3 As shown, in the embodiment of the present application, the protrusion 120 can be specifically provided on the top wall of the preform body 110 (i.e., the first side wall 111 can be the top wall of the preform body 110). When the wear-resistant preform 100 is cast using an amorphous castable, the protrusion 120 can be formed integrally with the preform body 110.

[0071] As a specific example, continue to refer to Figure 1-Figure 3As shown, in the embodiment of the present application, the recessed portion 130 can be specifically provided on the bottom wall of the prefabricated body 110 (i.e., the second side wall 112 can be the bottom wall of the prefabricated body 110). In this way, when the wear-resistant prefabricated parts 100 are used to build and repair the drop wall, the protruding portion 120 of the wear-resistant prefabricated part 100 located on the lower layer can cooperate with the recessed portion 130 of the wear-resistant prefabricated part 100 located on the upper layer (in some examples, it can also be understood that the protruding portion 120 is embedded in the recessed portion 130), so that the two wear-resistant prefabricated parts 100 located on the upper and lower layers form an integral structure. When vibration occurs, the protruding portion 120 and the recessed portion 130 can move the two upper and lower layers together. The positions of the wear-resistant prefabricated parts 100 are limited to each other, so as to avoid the wear-resistant prefabricated parts 100 from shifting and peeling off. That is, in the embodiment of the present application, a protrusion 120 and a recessed part 130 are formed on the body of the wear-resistant prefabricated part 100. When the drop wall is built and repaired, the protrusion 120 cooperates with the recessed part 130 to improve the integrity of the repaired drop wall, avoid the peeling off of the wear-resistant prefabricated parts 100, and extend the operation cycle and operation stability of the incinerator.

[0072] It can be understood that in some optional examples of the embodiments of the present application, the positions of the protrusion 120 and the recessed portion 130 can also be interchanged. For example, in some examples, the protrusion 120 can also be set on the bottom wall of the preform body 110, and correspondingly, the recessed portion 130 can be set on the top wall of the preform body 110.

[0073] In some other optional examples of the embodiments of the present application, the protrusion 120 and the recessed portion 130 can be arranged on the top wall and the bottom wall of the preform body 110 at the same time; that is, the protrusion 120 and the recessed portion 130 are arranged on the top wall of the preform body 110 at the same time, and the protrusion 120 and the recessed portion 130 are also arranged on the bottom wall of the preform body 110 at the same time.

[0074] In an optional example of the embodiment of the present application, continue to refer to Figure 1-Figure 3 As shown, the third side wall 113 of the preform body 110 is an inclined wall, which is inclined relative to the vertical wall. The third side wall 113 is located between the first side wall 111 and the second side wall 112 .

[0075] It is understandable that, usually, after the garbage is pushed from the pushing device into the incinerator and ignited, the garbage rolls / tumbles on the wall surface / wall of the drop wall and is fully burned during the rolling process. In the embodiment of the present application, the third side wall 113 of the prefabricated body 110 is set as an inclined wall. In this way, the rolling distance of the garbage can be extended, which facilitates the full combustion of the garbage. Of course, in some optional examples, the third side wall 113 can also be set as a vertical wall. That is to say, in the embodiment of the present application, the third side wall 113 of the prefabricated body 110 can specifically be the side facing the incinerator after the drop wall is built, or it can also be understood as the side located inside the incinerator.

[0076] Continue to refer to Figure 1-Figure 3 As shown, in an optional example of an embodiment of the present application, an anchoring groove 115 is provided on the fourth side wall 114 and the fifth side wall of the preform body 110, and the fourth side wall 114 and the fifth side wall are located between the first side wall 111 and the second side wall 112, and the anchoring groove 115 is located at one end of the fourth side wall 114 and the fifth side wall facing away from the third side wall 113, and the anchoring groove 115 is used to install the tensioning fixture 800.

[0077] Specifically, in the embodiment of the present application, the anchoring groove 115 can be integrally formed with the preform body 110; in some optional examples, the anchoring groove 115 can also be obtained by secondary processing by punching the preform body 110 after the preform body 110 is formed.

[0078] In the embodiment of the present application, the anchoring groove 115 can specifically be a blind hole or a through hole.

[0079] In the embodiment of the present application, anchoring grooves 115 are provided on the fourth side wall 114 and the fifth side wall of the prefabricated body 110, so that the installation of the tensioning fixture 800 is facilitated, thereby facilitating the fixation of the wear-resistant prefabricated part 100, and effectively avoiding the collapse of the drop wall after the wear-resistant prefabricated part 100 is repaired, thereby ensuring the long-term operation stability of the incinerator.

[0080] In an optional example of the embodiment of the present application, continue to refer to Figure 1-3 As shown, an avoidance groove 116 is further provided on the fourth side wall 114 and the fifth side wall. The avoidance groove 116 is connected to the anchoring groove 115, and the end of the avoidance groove 116 facing away from the third side wall 113 passes through the sixth side wall 117 of the preform body 110, and the sixth side wall 117 is arranged opposite to the third side wall 113; the depth of the avoidance groove 116 is less than the depth of the anchoring groove 115; the avoidance groove 116 is used to accommodate the pulling fixture 800.

[0081] In the specific setting, in the embodiment of the present application, the avoidance groove 116 can be formed by performing a secondary groove on the outer periphery of the anchoring groove 115.

[0082] It is understandable that after the wear-resistant prefabricated parts 100 are used to build and repair the drop wall, the side of the drop wall formed facing the incinerator is usually corroded by acids, alkalis, and water vapor in the garbage. The acids, alkalis, and water vapor in the garbage may enter through the gaps between the wear-resistant prefabricated parts 100 and corrode the tensioning parts 800. To avoid this, in the embodiment of the present application, avoidance grooves 116 are provided on the fourth and fifth side walls 114 and 117 of the prefabricated part body 110, and the avoidance grooves 116 are provided to pass through the sixth side wall 117. In this way, after the drop wall is built, the tensioning parts 800 will be stored in the avoidance grooves, thereby effectively preventing the tensioning parts 800 from causing excessive gaps between the wear-resistant prefabricated parts 100, effectively reducing the gaps between the wear-resistant prefabricated parts 100, effectively protecting the tensioning parts 800, and preventing the tensioning parts 800 from breaking, thereby improving the long-term stability of the incinerator.

[0083] Reference Figure 3 As shown, in an optional example of the embodiment of the present application, the side of the avoidance groove 116 facing the first side wall 111 passes through the first side wall 111 .

[0084] That is, in the embodiment of the present application, the avoidance groove 116 can penetrate the first side wall 111 and the sixth side wall 117 at the same time. Figure 3 As shown, a 90° or nearly 90° corner avoidance groove 116 is formed at the corner between the first side wall 111 and the sixth side wall 117. Thus, after the tensioning member 800 is positioned in the anchoring groove 115, the tensioning member 800 can be rotated 90° around the anchoring groove 115. This improves the flexibility of the installation of the tensioning member 800 and facilitates the fixing of the other end of the tensioning member 800 to the grate housing.

[0085] In some optional examples of the embodiments of the present application, refer to Figure 1 and Figure 2 As shown, the protrusion 120 extends along the length direction of the preform body 110. It is understood that in the embodiment of the present application, after the protrusion 120 is arranged along the length direction of the preform body 110, the recessed portion 130 can also extend along the length direction of the preform body 110.

[0086] Figure 4 It is a schematic diagram of the overall structure of the wear-resistant prefabricated parts provided in the embodiment of the present application cooperating with each other.

[0087] Reference Figure 4As shown, after multiple wear-resistant prefabricated parts 100 are laid along the height direction, the protrusions 120 and the recesses 130 arranged along the length direction can increase the contact area between two adjacent wear-resistant prefabricated parts 100, that is, they can improve the integrity and integrity of the wear-resistant prefabricated parts after laying, effectively improve the integrity of the drop wall, and avoid the peeling of the wear-resistant prefabricated parts 100.

[0088] It can be understood that in some optional examples of the embodiment of the present application, there are multiple protrusions 120, and the multiple protrusions 120 are arranged at intervals along the length direction of the preform body 110.

[0089] It is also understood that in other optional examples of the present embodiment, the plurality of protrusions 120 are spaced apart along the thickness direction of the prefabricated body 110. It should be noted that the thickness direction of the prefabricated body 110 may specifically refer to the thickness direction along the drop wall of the incinerator, such as the direction between the third side wall 113 and the sixth side wall 117 in the aforementioned embodiment. This effectively enhances the integrity of two adjacent wear-resistant prefabricated members 100 after installation, thereby improving the integrity and overall integrity of the wear-resistant prefabricated members, and preventing spalling of the wear-resistant prefabricated members 100.

[0090] In some optional examples of the embodiments of the present application, the wear-resistant preform 100 can be cast using a corundum silicon carbide castable material, and the casting can be specifically performed using the following ratio:

[0091] 68% 0-5mm plate-shaped corundum, 5% 200-mesh plate-shaped corundum powder, 5% 0-5mm 97% silicon carbide, 10% 200-mesh 97% silicon carbide, 6% alumina powder, 4% 92% silica fume, 2% high-alumina cement, 0.15% sodium tripolyphosphate, and 0.1% sodium hexametaphosphate. Dry-mix the above bulk materials for 5 minutes, then add 8% silica sol. After stirring for 3 minutes, vibrate the mixture in a mold for 20-40 seconds.

[0092] Figure 5 It is a schematic diagram of the heating system for low-temperature sintering of the wear-resistant prefabricated parts provided in the embodiment of the present application.

[0093] After 48 hours of wet curing, the molded wear-resistant preform 100 is demoulded and placed in a firing kiln for low-temperature firing. Figure 10As shown, specifically, in the range of 25-150°C, the temperature is increased at a heating rate of 20°C / h for 6 hours to reach the temperature of 150°C; the temperature is kept constant at 150°C for 16 hours; in the range of 150-250°C, the temperature is increased at a heating rate of 20°C / h for 5 hours; the temperature is kept constant at 250°C for 20 hours; in the range of 250-350°C, the temperature is increased at a heating rate of 20°C / h for 5 hours; the temperature is kept constant at 350°C for 20 hours; in the range of 350-550°C, the temperature is increased at a heating rate of 25°C / h for 8 hours; the temperature is kept constant at 550°C for 20 hours; and then the furnace is cooled to room temperature.

[0094] In some other optional examples of the embodiment of the present application, the wear-resistant prefabricated part 100 can be cast by using chrome corundum castable material, and the following proportions can be used for casting:

[0095] 70% 0-5mm plate-shaped corundum, 10% 200-mesh plate-shaped corundum powder, 5% chrome green, 3% 2000-mesh chromium oxide powder, 7% alumina powder, 2% 92% silica fume, 3% high-alumina cement, and 0.5% polycarboxylate superplasticizer. Dry-mix the above bulk materials for 5 minutes, then add 10% silica sol, stir for 3 minutes, and vibrate in a mold for 20-40 seconds.

[0096] Reference Figure 5 As shown, the formed wear-resistant preform 100 is wet-cured for 48 hours, then demoulded and placed in a firing kiln for low-temperature firing.

[0097] It is also understandable that, with reference to Figure 4 As shown, in the embodiment of the present application, the drop wall is formed by masonry of the wear-resistant prefabricated members 100; therefore, the bottom of a wear-resistant prefabricated member 100 located at the bottom in the height direction does not need to be matched with other wear-resistant prefabricated members 100; Figure 4 and Figure 2 As shown, in the embodiment of the present application, the second side wall 112 (ie, the bottom wall in the aforementioned example) of a wear-resistant preform 100 located at the bottom layer may not be provided with the recessed portion 130 .

[0098] In other examples of the embodiments of the present application, refer to Figure 4 As shown, the top of a wear-resistant preform 100 located at the top layer in the height direction does not need to cooperate with other wear-resistant preforms 100. Therefore, the first side wall 111 of the wear-resistant preform 100 located at the top (i.e., the top wall in the aforementioned embodiment) may not be provided with the protrusion 120.

[0099] In addition, it can also be understood that the wear-resistant preform 100 at the top is usually in contact with or connected to the grate pusher; in order to reduce / avoid the wear of the grate pusher on the top wear-resistant preform 100, refer to Figure 3As shown, in the implementation of the present application, a shell 400 is provided on top of the wear-resistant preform 100 .

[0100] Figure 6 It is a structural schematic diagram of the medium-sized shell of the wear-resistant prefabricated part provided in an embodiment of the present application.

[0101] Reference Figure 6 As shown, in the embodiment of the present application, the shell 400 can be cast using materials such as Q235, Q345, 12Cr13, 06Cr19Ni10, or 06Cr25Ni20. A first anchor 401 can be provided on the side of the shell 400 facing the wear-resistant preform. Specifically, in the embodiment of the present application, the first anchor 401 can be welded thereto.

[0102] That is, in the embodiment of the present application, after the anchors are welded inside the shell 400 , the refractory castable material can be poured into the shell 400 , thereby forming the wear-resistant preform 100 .

[0103] Continue to refer to Figure 3 As shown, in an optional example of the embodiment of the present application, the shell 400 can cover at least the first side wall 111 and the third side wall 113 of the wear-resistant preform 100. Of course, in some optional examples, the shell 400 can also cover a portion of the sixth side wall 117. In this way, the wear of the wear-resistant preform 100 can be effectively reduced.

[0104] Figure 7 This is a schematic cross-sectional view of the drop wall provided in an embodiment of the present application. Figure 8 This is a front view of the drop wall provided in the embodiment of the present application. Figure 9 It is a structural diagram of the cooperation between the drop wall and the grate provided in the embodiment of the present application.

[0105] Reference Figure 7-Figure 9 As shown, an embodiment of the present application further provides a drop wall, comprising a leveling layer 200 and a plurality of wear-resistant prefabricated parts 100 as described in any of the foregoing embodiments of the present application, wherein the plurality of wear-resistant prefabricated parts 100 are arranged along the length direction and height direction of the leveling layer 200 .

[0106] It is understandable that after the drop wall is damaged, the bottom of the drop wall may be uneven; in order to ensure the stability of the wear-resistant prefabricated parts 100 during masonry, a leveling layer 200 can be poured at the bottom of the drop wall.

[0107] Specifically, in the embodiments of the present application, second anchors 201 can be welded to the bottom of the drop wall. In some specific examples, second anchors 201 can be V-shaped, and the spacing between second anchors 201 can be set to 100 mm to 150 mm. Then, a leveling layer 200 is cast. The thickness of the leveling layer 200 can range from 0 mm to 150 mm. Curing is then performed for 8 hours.

[0108] It can be understood that in the embodiment of the present application, the castable of the leveling layer 200 can be the same as or similar to the refractory castable of the wear-resistant prefabricated part 100 in the aforementioned embodiment. For details, please refer to the specific description of the refractory castable in the aforementioned embodiment. In the embodiment of the present application, this will not be repeated.

[0109] Reference Figure 8 As shown, in an optional example of the embodiment of the present application, a plurality of wear-resistant prefabricated parts 100 arranged along the height direction of the leveling layer 200 are staggered.

[0110] Specifically, the height direction of the leveling layer 200 can also be the height direction of the drop wall. It is understandable that the multiple wear-resistant prefabricated parts 100 arranged along the height direction are staggered (in some examples, this can also be called staggered); in this way, the protrusions 120 on each wear-resistant prefabricated part 100 cooperate / engage with the recesses 130 of the two wear-resistant prefabricated parts 100, thereby improving the integrity of the drop wall after construction not only in the height direction but also in the horizontal direction; this can effectively ensure the integrity of the drop wall, avoid the breakage of the fasteners 800, extend the service life of the drop wall, and improve the stability of the drop wall during long-term use.

[0111] Continue to refer to Figure 8 As shown, in an optional example of an embodiment of the present application, a plurality of expansion gaps 300 are provided along the length direction of the leveling layer 200; an expansion gap 300 is provided for each preset number of wear-resistant preformed parts 100; and an expansion gap 300 is provided between the wear-resistant preformed part 100 and the incinerator.

[0112] In this way, by setting the expansion gap 300, during the process of garbage incineration and rolling, the temperature of the wear-resistant preform 100 increases, and the expansion gap 300 can absorb the extrusion force when the wear-resistant preform 100 expands, which can effectively protect the wear-resistant preform 100 from being damaged, thereby improving the service life of the wear-resistant preform 100, that is, improving the service life of the drop wall and the stability of long-term use.

[0113] In an optional example of the embodiment of the present application, the width of the expansion gap 300 is 5 mm to 30 mm. Specifically, the width of the expansion gap 300 can be 5 mm, 10 mm, 20 mm, or 30 mm. It should be understood that the widths of the expansion gap 300 in the aforementioned examples are merely examples and do not limit the specific width of the expansion gap 300.

[0114] In specific configuration, the preset number of wear-resistant preformed parts 100 may be 5, 10, or 15, etc. As a specific example, the preset number of wear-resistant preformed parts 100 may be 10.

[0115] It should be noted that the numerical values and numerical ranges involved in the embodiments of the present invention are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors. Those skilled in the art may consider such errors to be negligible.

[0116] In some optional examples of the present invention, the expansion gap 300 is filled with a soft cushioning material. Specifically, in the present invention, the soft cushioning material can be aluminum silicate fiber felt. When constructing the drop wall, the aluminum silicate fiber felt can be used to create the expansion gap 300.

[0117] In the embodiment of the present application, by arranging a soft buffer material in the expansion gap 300, on the one hand, the thermal stress of the wear-resistant prefabricated part under high temperature conditions can be buffered; on the other hand, by filling the expansion gap 300 with the soft buffer material, the acid, alkali or water vapor in the garbage can be blocked, which can effectively prevent the acid, alkali and water vapor in the garbage from corroding the pull fixture 800, and can effectively extend the service life of the pull fixture 800.

[0118] In an optional example of the embodiment of the present application, the drop wall further includes a mold shell 400 , and the mold shell 400 is provided on a wear-resistant preformed part 100 located at the top among the multiple wear-resistant preformed parts 100 arranged along the height direction.

[0119] Specifically, the shell 400 can be cast from materials such as Q235, Q345, 12Cr13, 06Cr19Ni10, 06Cr25Ni20, etc. For details, please refer to the detailed description of the above embodiments of the present application, which will not be repeated in the present application.

[0120] In an optional example of the embodiment of the present application, refer to Figure 7 and Figure 9 As shown, the drop wall further includes a heat insulation layer 500 , which is located on the outside of the wear-resistant preformed part 100 .

[0121] Specifically, in the embodiment of the present application, the thermal insulation layer 500 can be cast using a lightweight thermal insulation castable. In a specific configuration, the thermal insulation layer 500 can be cast on the outer side of the wear-resistant prefabricated member 100 after the wear-resistant prefabricated member 100 is completed. Here, the outer side of the wear-resistant prefabricated member 100 can specifically refer to the side of the wear-resistant prefabricated member 100 facing the grate shell, or the outer side of the wear-resistant prefabricated member 100 can specifically refer to the side of the wear-resistant prefabricated member 100 facing away from the incinerator.

[0122] By providing the heat insulation layer 500 , heat loss in the waste incinerator can be effectively avoided, and the utilization rate of heat generated by waste incineration can be improved.

[0123] In an optional example of the embodiment of the present application, continue to refer to Figure 7 and Figure 9 As shown, the drop wall further includes a sealing layer 600, which is located on the side of the wear-resistant prefabricated component 100 facing the insulation layer 500 and on top of the insulation layer 500. The thickness of the sealing layer 600 can be 50 mm to 200 mm.

[0124] Specifically, in the embodiment of the present application, the sealing layer 600 can be cast using a corundum silicon carbide castable, and specifically can be cast on the top of the thermal insulation layer 500 to form the sealing layer 600; in this way, on the one hand, the sealing layer 600 can seal the thermal insulation layer 500, and on the other hand, the sealing layer 600 can avoid heat loss in the incinerator, thereby improving the utilization rate of the heat generated by waste incineration.

[0125] Continue to refer to Figure 7 and Figure 9 As shown, in an optional example of the embodiment of the present application, the drop wall further includes an insulation board 700 , and the insulation board 700 is located on the side of the insulation layer 500 facing away from the wear-resistant prefabricated part 100 .

[0126] Specifically, in the embodiment of the present application, the insulation board 700 can be arranged close to the grate equipment housing. In the specific arrangement, the insulation board 700 can be a high-temperature insulation board 700. The sealing layer 600 can be poured on the top of the insulation board 700.

[0127] Figure 10 It is a flow chart for implementing the drop wall repair construction method provided in the embodiment of the present application.

[0128] Reference Figure 10 As shown, the embodiment of the present application also provides a drop wall repair construction method, which specifically includes the following steps:

[0129] Step 1001: pouring a leveling layer 200 according to the damage form of the drop wall.

[0130] It is understandable that for some drop walls that may not be seriously damaged and have a flat bottom, it is not necessary to cast the leveling layer 200. In other words, the thickness of the leveling layer 200 can be 0 mm.

[0131] In some other possible examples, the damage of the drop wall is relatively serious, and the pouring thickness of the leveling layer 200 can be determined according to the damage of the drop wall. For example, the pouring thickness of the leveling layer 200 can be 0 mm-150 mm.

[0132] It is understood that in the embodiment of the present application, to enhance the bonding strength between the poured leveling layer 200 and the existing drop wall, first anchors 401 may be welded to the bottom of the existing drop wall. Specifically, the first anchors 401 may be arranged at intervals of 100 mm to 150 mm. Then, the leveling layer 200 may be poured.

[0133] It can also be understood that in the embodiment of the present application, after the leveling layer 200 is poured, it can be cured for a first preset time length, for example, 24 hours.

[0134] Step 1002: Install an insulation board 700 inside the incinerator shell. The insulation board 700 may be the high-temperature insulation board 700 in the aforementioned embodiment, and the thickness of the high-temperature insulation board 700 may be 50 mm to 200 mm.

[0135] In step 1003, the wear-resistant prefabricated members 100 are laid on the leveling layer 200 and fixed to the housing via the fasteners 800. Specifically, as described in detail in the previous embodiment, the wear-resistant prefabricated members 100 can be arranged and laid along both the length and height of the leveling layer 200. Furthermore, the wear-resistant prefabricated members 100 can be laid in a staggered manner in the height direction.

[0136] It is understood that in the embodiment of the present application, the layer of wear-resistant prefabricated members 100 directly disposed above the leveling layer 200, i.e., the wear-resistant prefabricated members 100 that are in direct contact with the leveling layer 200, can be referred to as the footing layer wear-resistant prefabricated members 100. A connecting layer of wear-resistant prefabricated members 100 can then be built above the footing layer wear-resistant prefabricated members 100. The connecting layer wear-resistant prefabricated members 100 can be a single layer or multiple layers; this is not limited in the embodiment of the present application. The starting layer of wear-resistant prefabricated members 100 (i.e., the top layer of the drop wall) is then disposed above the connecting layer wear-resistant prefabricated members 100.

[0137] In the specific setting, each layer of wear-resistant preforms 100 can be staggered with the wear-resistant preforms 100 of the adjacent layer. For example, the connecting layer wear-resistant preforms 100 are staggered with the starting layer wear-resistant preforms 100; then, the starting layer wear-resistant preforms 100 are staggered with the connecting layer wear-resistant preforms 100.

[0138] In addition, along the length direction of the leveling layer 200, expansion gaps 300 are reserved at intervals of a preset number of wear-resistant prefabricated members 100. Expansion gaps 300 are provided between the wear-resistant prefabricated members 100 and the sidewalls of the incinerator. Soft cushioning material can be filled in the expansion gaps 300.

[0139] Step 1004: Cast the heat insulating layer 500 between the wear-resistant prefabricated part 100 and the heat insulating board 700. Specifically, the heat insulating layer 500 can be cast using a lightweight heat insulating castable.

[0140] Step 1005 , pouring the sealing layer 600 on top of the thermal insulation layer 500 to form a repaired drop wall.

[0141] It can be understood that in the embodiment of the present application, after the sealing layer 600 is poured, the sealing layer 600 can be cured for a second preset time length, specifically, waiting until the sealing layer 600 is completely hardened.

[0142] In some examples, the grate equipment is also provided with a wear lining, and thus the wear lining of the equipment may be restored.

[0143] The temperature is raised according to the first preset temperature raising system, thereby forming a repaired drop wall, and the waste incinerator can now be fed and operated. The first preset temperature raising system can specifically be:

[0144] In the range of 25℃-300℃, increase the temperature at a rate of 35℃ / h, for a total of 8 hours; keep the temperature constant at 300℃ for 6 hours; in the range of 300℃-500℃, increase the temperature at a rate of 50℃ / h, for a total of 4 hours; keep the temperature constant at 500℃ for 6 hours; then increase the temperature from 500℃ to the operating temperature at a rate of 100℃ / h until it reaches the operating temperature.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A wear-resistant prefabricated part, characterized in that: include: A prefabricated part body (110), the prefabricated part body (110) is formed by casting a refractory castable, the prefabricated part body (110) has a protrusion (120) and a recess (130), the protrusion (120) is used to cooperate with the recess (130) of another wear-resistant prefabricated part, so that at least two wear-resistant prefabricated parts form an integral structure; The protrusion (120) extends along the length direction of the preform body (110), the protrusion (120) protrudes from the first side wall (111) of the preform body (110), and the recessed portion (130) is recessed in the second side wall (112) of the preform body (110), and the first side wall (111) and the second side wall (112) are two walls opposite to each other of the preform body (110); The third side wall (113) of the preform body (110) is an inclined wall, the inclined wall is arranged obliquely relative to the vertical wall, and the third side wall (113) is located between the first side wall (111) and the second side wall (112); Anchoring grooves (115) are provided on the fourth side wall (114) and the fifth side wall of the preform body (110); the fourth side wall (114) and the fifth side wall are located between the first side wall (111) and the second side wall (112); the anchoring grooves (115) are located at one end of the fourth side wall (114) and the fifth side wall facing away from the third side wall (113); and the anchoring grooves (115) are used to install the tensioning member (800).

2. The wear-resistant preform according to claim 1, characterized in that: The fourth side wall (114) and the fifth side wall are further provided with an escape groove (116), the escape groove (116) being connected to the anchor groove (115), and one end of the escape groove (116) facing away from the third side wall (113) passes through the sixth side wall (117) of the preform body (110), and the sixth side wall (117) is arranged opposite to the third side wall (113); the depth of the escape groove (116) is less than the depth of the anchor groove (115); and the escape groove (116) is used to accommodate the tensioning member (800).

3. The wear-resistant preform according to claim 2, characterized in that: The side of the avoidance groove (116) facing the first side wall (111) passes through the first side wall (111).

4. The wear-resistant preform according to claim 1, characterized in that: There are a plurality of protrusions (120), and the plurality of protrusions (120) are arranged at intervals along the length direction of the preform body (110).

5. The wear-resistant preform according to claim 4, characterized in that: The plurality of protrusions (120) are arranged at intervals along the thickness direction of the preform body (110).

6. A drop wall, characterized in that: It comprises a leveling layer (200) and a plurality of wear-resistant prefabricated parts (100) according to any one of claims 1 to 5, wherein the plurality of wear-resistant prefabricated parts (100) are arranged along the length direction and the height direction of the leveling layer (200).

7. The drop wall according to claim 6, characterized in that: The plurality of wear-resistant prefabricated parts (100) arranged along the height direction of the leveling layer (200) are staggered.

8. The drop wall according to claim 6, wherein: A plurality of expansion gaps (300) are provided along the length direction of the leveling layer (200); one expansion gap (300) is provided for each preset number of wear-resistant prefabricated parts (100); and the expansion gap (300) is provided between the wear-resistant prefabricated parts (100) and the incinerator.

9. The drop wall according to claim 8, characterized in that: The width of the expansion gap (300) is 5 mm to 30 mm.

10. The drop wall according to claim 8, characterized in that: The expansion gap (300) is filled with soft buffer material.

11. The drop wall according to claim 6, wherein: The drop wall further comprises a shell (400), wherein the shell (400) is provided on a wear-resistant preformed part (100) located at the top among a plurality of wear-resistant preformed parts (100) arranged in a height direction.

12. The drop wall according to claim 11, characterized in that: The mold shell (400) covers the top wall and side walls of the wear-resistant preform (100).

13. The drop wall according to any one of claims 6 to 12, characterized in that: The drop wall further comprises a heat insulation layer (500), and the heat insulation layer (500) is located outside the wear-resistant prefabricated component (100).

14. The drop wall according to claim 13, wherein: The drop wall further comprises a sealing layer (600), wherein the sealing layer (600) is located on a side of the wear-resistant prefabricated component (100) facing the thermal insulation layer (500), and the sealing layer (600) is located on top of the thermal insulation layer (500).

15. The drop wall according to claim 14, wherein: The drop wall further comprises a heat insulation plate (700), and the heat insulation plate (700) is located on a side of the heat insulation layer (500) facing away from the wear-resistant prefabricated component (100).

16. A method for repairing a drop wall, characterized in that: For repairing the drop wall according to any one of claims 6 to 15, the construction method comprises: According to the damage form of the drop wall, pour the leveling layer (200); An insulation plate (700) is provided on the inner side of the incinerator shell; Laying the wear-resistant prefabricated component (100) on the leveling layer (200), the wear-resistant prefabricated component (100) being fixedly connected to the shell via a fastening component (800); pouring a heat-insulating layer (500) between the wear-resistant prefabricated part (100) and the heat-insulating plate (700); A sealing layer (600) is poured on top of the thermal insulation layer (500) to form a repaired drop wall.

17. The fall wall repair construction method according to claim 16, characterized in that: The step of pouring the leveling layer (200) according to the damage form of the drop wall specifically includes: According to the damage form of the drop wall, the anchors are welded, and the spacing between the anchors is 100mm-150mm; Casting a leveling layer (200), wherein the casting thickness of the leveling layer (200) is 0 mm to 150 mm; Curing is performed for a first preset time length to form the leveling layer (200).

18. The fall wall repair construction method according to claim 16, characterized in that: The steps of laying the wear-resistant prefabricated component (100) on the leveling layer (200), and fixing the wear-resistant prefabricated component (100) to the shell via a fastening component (800) specifically include: Laying a footing layer wear-resistant prefabricated member (100) along the length direction of the leveling layer (200); Building a connection layer wear-resistant prefabricated part (100) above the footing layer wear-resistant prefabricated part (100), wherein the connection layer wear-resistant prefabricated part (100) and the footing layer wear-resistant prefabricated part (100) are staggered; Laying the starting layer wear-resistant prefabricated parts (100) above the connecting layer wear-resistant prefabricated parts (100), wherein the starting layer wear-resistant prefabricated parts (100) and the connecting layer wear-resistant prefabricated parts (100) are staggered; Wherein, along the length direction of the leveling layer (200), expansion gaps (300) are reserved at intervals of a preset number of the wear-resistant prefabricated parts (100), and the expansion gaps (300) are provided between the wear-resistant prefabricated parts (100) and the side walls of the incinerator.

19. The fall wall repair construction method according to claim 16, characterized in that: After the step of pouring the sealing layer (600) on top of the thermal insulation layer (500), the method further comprises: a second preset maintenance time length; Restoring equipment wear lining; The temperature is increased according to a first preset temperature increase schedule to form a repaired drop wall.

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